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fe944acf | 1 | /* NFP-specific support for 64-bit ELF |
a2c58332 | 2 | Copyright (C) 2017-2022 Free Software Foundation, Inc. |
fe944acf FT |
3 | Contributed by Francois H. Theron <francois.theron@netronome.com> |
4 | ||
5 | This file is part of BFD, the Binary File Descriptor library. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 3 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 51 Franklin Street - Fifth Floor, | |
20 | Boston, MA 02110-1301, USA. */ | |
21 | ||
22 | #include "sysdep.h" | |
23 | #include "bfd.h" | |
24 | #include "libbfd.h" | |
25 | #include "elf-bfd.h" | |
26 | #include "elf/nfp.h" | |
fe944acf FT |
27 | |
28 | ||
29 | static bfd_reloc_status_type | |
30 | elf64_nfp_reloc (bfd * abfd ATTRIBUTE_UNUSED, | |
31 | arelent * reloc_entry, | |
32 | asymbol * symbol, | |
33 | void *data ATTRIBUTE_UNUSED, | |
34 | asection * input_section, | |
35 | bfd * output_bfd, | |
36 | char **error_message ATTRIBUTE_UNUSED); | |
37 | ||
38 | /* We don't actually apply any relocations in this toolset | |
39 | so we make them all do nothing, but at least display useful | |
40 | names. | |
41 | Most of these are mainly used by the NFP toolchain to resolve things | |
42 | before the final ELF file is created. */ | |
c94cb026 AM |
43 | #define NFP_HOWTO(type) \ |
44 | HOWTO (type, 0, 0, 0, false, 0, complain_overflow_dont, elf64_nfp_reloc, \ | |
45 | #type, false, 0, 0, false) | |
fe944acf FT |
46 | static reloc_howto_type elf_nfp_howto_table[] = |
47 | { | |
c94cb026 AM |
48 | NFP_HOWTO (R_NFP_NOTYPE), |
49 | NFP_HOWTO (R_NFP_W32LE), | |
50 | NFP_HOWTO (R_NFP_SRC8_A), | |
51 | NFP_HOWTO (R_NFP_SRC8_B), | |
52 | NFP_HOWTO (R_NFP_IMMED8_I), | |
53 | NFP_HOWTO (R_NFP_SC), | |
54 | NFP_HOWTO (R_NFP_IMMED_LO16_I_A), | |
55 | NFP_HOWTO (R_NFP_IMMED_LO16_I_B), | |
56 | NFP_HOWTO (R_NFP_SRC7_B), | |
57 | NFP_HOWTO (R_NFP_SRC7_A), | |
58 | NFP_HOWTO (R_NFP_SRC8_I_B), | |
59 | NFP_HOWTO (R_NFP_SRC8_I_A), | |
60 | NFP_HOWTO (R_NFP_IMMED_HI16_I_A), | |
61 | NFP_HOWTO (R_NFP_IMMED_HI16_I_B), | |
62 | NFP_HOWTO (R_NFP_W64LE), | |
63 | NFP_HOWTO (R_NFP_SH_INFO), | |
64 | NFP_HOWTO (R_NFP_W32BE), | |
65 | NFP_HOWTO (R_NFP_W64BE), | |
66 | NFP_HOWTO (R_NFP_W32_29_24), | |
67 | NFP_HOWTO (R_NFP_W32LE_AND), | |
68 | NFP_HOWTO (R_NFP_W32BE_AND), | |
69 | NFP_HOWTO (R_NFP_W32LE_OR), | |
70 | NFP_HOWTO (R_NFP_W32BE_OR), | |
71 | NFP_HOWTO (R_NFP_W64LE_AND), | |
72 | NFP_HOWTO (R_NFP_W64BE_AND), | |
73 | NFP_HOWTO (R_NFP_W64LE_OR), | |
74 | NFP_HOWTO (R_NFP_W64BE_OR) | |
fe944acf FT |
75 | }; |
76 | ||
0a1b45a2 | 77 | static bool |
fe944acf FT |
78 | elf64_nfp_object_p (bfd * abfd) |
79 | { | |
80 | /* If the e_machine value is one of the unofficial ones, we convert | |
81 | it first and set e_flags accordingly for later consistency. */ | |
82 | if (elf_elfheader (abfd)->e_machine == E_NFP_MACH_3200) | |
83 | { | |
84 | elf_elfheader (abfd)->e_machine = EM_NFP; | |
85 | elf_elfheader (abfd)->e_flags &= ~EF_NFP_SET_MACH (~0); | |
86 | elf_elfheader (abfd)->e_flags |= EF_NFP_SET_MACH (E_NFP_MACH_3200); | |
87 | } | |
88 | else if (elf_elfheader (abfd)->e_machine == E_NFP_MACH_6000) | |
89 | { | |
90 | elf_elfheader (abfd)->e_machine = EM_NFP; | |
91 | elf_elfheader (abfd)->e_flags &= ~EF_NFP_SET_MACH (~0); | |
92 | elf_elfheader (abfd)->e_flags |= EF_NFP_SET_MACH (E_NFP_MACH_6000); | |
93 | } | |
94 | ||
95 | if (elf_elfheader (abfd)->e_machine == EM_NFP) | |
96 | { | |
97 | int e_mach = EF_NFP_MACH (elf_elfheader (abfd)->e_flags); | |
98 | ||
99 | switch (e_mach) | |
100 | { | |
101 | case E_NFP_MACH_3200: | |
102 | case E_NFP_MACH_6000: | |
103 | if (!bfd_default_set_arch_mach (abfd, bfd_arch_nfp, e_mach)) | |
0a1b45a2 | 104 | return false; |
fe944acf FT |
105 | default: |
106 | break; | |
107 | } | |
108 | } | |
109 | ||
0a1b45a2 | 110 | return true; |
fe944acf FT |
111 | } |
112 | ||
0a1b45a2 | 113 | static bool |
fe944acf FT |
114 | elf64_nfp_section_from_shdr (bfd * abfd, |
115 | Elf_Internal_Shdr * hdr, | |
116 | const char *name, int shindex) | |
117 | { | |
118 | switch (hdr->sh_type) | |
119 | { | |
120 | case SHT_NFP_INITREG: | |
121 | case SHT_NFP_MECONFIG: | |
122 | case SHT_NFP_UDEBUG: | |
123 | return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex); | |
124 | default: | |
0a1b45a2 | 125 | return false; |
fe944acf FT |
126 | } |
127 | } | |
128 | ||
129 | bfd_reloc_status_type | |
130 | elf64_nfp_reloc (bfd * abfd ATTRIBUTE_UNUSED, | |
131 | arelent * reloc_entry ATTRIBUTE_UNUSED, | |
132 | asymbol * symbol ATTRIBUTE_UNUSED, | |
133 | void *data ATTRIBUTE_UNUSED, | |
134 | asection * input_section ATTRIBUTE_UNUSED, | |
135 | bfd * output_bfd ATTRIBUTE_UNUSED, | |
136 | char **error_message ATTRIBUTE_UNUSED) | |
137 | { | |
138 | return bfd_reloc_ok; | |
139 | } | |
140 | ||
0a1b45a2 | 141 | static bool |
fe944acf FT |
142 | elf64_nfp_info_to_howto (bfd * abfd ATTRIBUTE_UNUSED, |
143 | arelent * cache_ptr, Elf_Internal_Rela * dst) | |
144 | { | |
145 | unsigned int r_type; | |
146 | ||
147 | r_type = ELF64_R_TYPE (dst->r_info); | |
148 | if (r_type >= R_NFP_MAX) | |
149 | { | |
150 | /* xgettext:c-format */ | |
151 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), | |
152 | abfd, r_type); | |
153 | bfd_set_error (bfd_error_bad_value); | |
0a1b45a2 | 154 | return false; |
fe944acf FT |
155 | } |
156 | cache_ptr->howto = &elf_nfp_howto_table[r_type]; | |
0a1b45a2 | 157 | return true; |
fe944acf FT |
158 | } |
159 | ||
160 | static reloc_howto_type * | |
161 | elf64_nfp_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED, | |
162 | bfd_reloc_code_real_type code ATTRIBUTE_UNUSED) | |
163 | { | |
164 | return NULL; | |
165 | } | |
166 | ||
167 | static reloc_howto_type * | |
168 | elf64_nfp_reloc_name_lookup (bfd * abfd ATTRIBUTE_UNUSED, | |
169 | const char *r_name ATTRIBUTE_UNUSED) | |
170 | { | |
171 | return NULL; | |
172 | } | |
173 | ||
174 | #define ELF_ARCH bfd_arch_nfp | |
175 | #define ELF_MACHINE_CODE EM_NFP | |
176 | #define ELF_MACHINE_ALT1 E_NFP_MACH_6000 | |
177 | #define ELF_MACHINE_ALT2 E_NFP_MACH_3200 | |
178 | #define ELF_MAXPAGESIZE 1 | |
179 | #define TARGET_LITTLE_NAME "elf64-nfp" | |
180 | #define TARGET_LITTLE_SYM nfp_elf64_vec | |
181 | ||
182 | #define elf_backend_object_p elf64_nfp_object_p | |
183 | #define elf_backend_section_from_shdr elf64_nfp_section_from_shdr | |
184 | #define elf_info_to_howto elf64_nfp_info_to_howto | |
185 | #define bfd_elf64_bfd_reloc_type_lookup elf64_nfp_reloc_type_lookup | |
186 | #define bfd_elf64_bfd_reloc_name_lookup elf64_nfp_reloc_name_lookup | |
187 | ||
188 | #include "elf64-target.h" |